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SMOKE CONSUMER.

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H. BLAISDELL.

SMOKE CONSUMER. No; 398,688. Patented Feb. 26, 1889.

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niTE STATES PATENT OFFICE.

HARRY ISLAISDFLL, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-THIRD TO CHARLES A. STIX, OF SAME PLACE.

SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 398,688, dated February 26, 1889.

Application filed September 17, 1888. Serial No. 285,608. (No model.)

To @ZZ whom, if; may concern.-

Be it known that I, HARRY BLAIsDELL, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Smoke-Consumers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specifica tion, and in which- Figure I is a side elevation illustrating my improvement. Fig. II is a front view, part in section. Fig. III is a vertical transverse section taken on line III III, Fig. I. Fig. IV is an enlarged detail section taken on line IV IV, Fig. II. Fig. V is an enlarged section of the siphon, taken on line V V, Fig. I.

My invention relates to an improved smokeconsumer for use in connection with steamboilers; and my invention consists in features of novelty hereinafter fully described, and pointed out in the claim.

Referring to the drawings, I represents a steam-boiler, having the usual smoke-stack, 2, and drum a represents the brick-work or setting7 and 5 the fire-box.

6 represents a steam-pipe extending from the drum 3 downwardly into the combustionehamber between the walls of the setting and the boiler, where it has preferably a number of return-bends, and from where it extends to a pipe, 7, at the front end of the boiler. One end, 7 i, of the pipe 7 extends into the base of the smoke-stack, and the other end extends downward and enters the upper portion of the front end of the tire-box, being preferably bent, as shown by dotted lines, Fig. II, to iit around the bottomv of the boiler close up against the front plate of the furnace. This end of the Vpipe 7 is perforated, as shown at 10 in Fig. IV, and it is preferably protected from the heat by a crating, ll, of iire-proof material. At the junction of the pipes 6, 7, and 7 I insert an injector, I2, having a regulating-valve, 13, (see Figs. II and V,) which injector projects axially into the pipe 7 past or beyond the pipe 7 L so that the steam will enter the pipe 7 only, and thus produce the desired suction or siphon in the pipe 7 The operation is as follows: The steam passes from the drum 3 through the pipe G and is superheated, owing to the pipe being located within the combustioil-chamber of the furnace. From the pipe 6 it passes through the injector into the pipe 7, and in doing so creates a suction within the pipe 7 that causes the uneonsumed products of combustion and gases to be taken from the breech or base of the smoke-stack through t-he funnel S into the pipe 7, where they are united with the superheated steam and discharged into the fire-box through the perforations IO. (See arrows, Figs. I and IV.) In this way I form a very cheap and effective smoke-consumer.

I claim as my invention- In a smoke-consumer, the combination, with the boiler, the setting in which said boiler is mounted having a iire-box and the smokestack, of the perforated pipe 7, extending under the boiler in juxtaposition thereto and to the forward end of the fire-box and curved to the contour of said boiler, a fire-proof era-ting around said pipe, having openings complementary to the perforations therein, an i11- verted funnel in said stack, a pipe, 7, connecting said funnel with pipe 7 at right angles thereto, the pipe G, an injector-nozzle extending from said pipe o axially into pipe 7 beyond pipe 7 L, a cock for regulating the iiow from said nozzle, and said pipe extending from the steam-space to the boiler and connected to the lower one of a number of returnebends located between the boiler and the setting, forming a superheating-coil, and the pipe 7 being connected to the upper one of said bends, as set forth.

HARRY BLAISDELL,

In presence of BENJN. A. KNIGHT, EDW. S. KNIGHT. 

